Eaton BU-EAFR-110P Arc Flash Relay - 3PH/ground detect
Part Number: BU-EAFR-110P
Quick Summary
Eaton arc flash relay BU-EAFR-110P senses faults to protect switchgear and motor circuits. Engineers often struggle with slow fault indication and inconsistent tripping across multi-branch feeders. Compliances: Contact Manufacturer. Certifications such as SIL, CE, and IP ratings are typical considerations for arc-flash protection equipment and should be confirmed with Eaton for your installation. This solution supports scalable protection architectures and fast signaling to control systems, delivering reliable safety while reducing downtime.
Product Information
Extended Description
BU-EAFR-110P Eaton: Eaton arc flash relay point sensor, 3PH and ground current detection, Max 12 point sensors, 2 high speed outputs, 4 Trip relays ARC FLASH RELAY, CURRENT, POINT SE
Product Name
Eaton arc flash relay point sensor
Catalog Number
BU-EAFR-110P
UPC
051712748247
Product Length/Depth
6.46 in
Product Height
6.18 in
Product Width
3.23 in
Product Weight
2 lb
Compliances
Contact Manufacturer
Type
Arc flash relay
The BU-EAFR-110P includes 3PH and ground current detection along with two high-speed outputs and four trip relays. Business impact: enables rapid fault isolation and precise signaling to protective devices, which reduces arc flash exposure and minimizes unplanned downtime. Application: ideal for switchgear, motor control centers, and complex feeder configurations where fast, reliable tripping is essential. Scalability up to twelve point sensors allows phased expansion as the system grows, delivering cost-effective protection without rework. This translates to improved protection coverage in large panels and easier future upgrades. Four independent trip relays provide flexible protection logic, enabling arc flash, current anomaly, or point-level signaling without compromising other protection functions. Application contexts include process lines and data centers where precise coordination is critical. Compact dimensions (6.46 in L × 6.18 in H × 3.23 in W) and a 2 lb weight support straightforward installation in standard enclosures, with predictable wiring and reduced panel footprint. Installation compatibility with Eaton protection ecosystems simplifies integration, reduces engineering time, and improves maintenance planning for ongoing reliability.
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FAQs
Yes. The BU-EAFR-110P is designed for integration with Eaton protection ecosystems and common electrical enclosures used for switchgear and motor control centers. Ensure mounting clearance and proper terminal access, then verify wiring diagrams match your control system’s logic. The device supports scalable protection, so you can extend sensing points within the same platform as your installations grow.
3PH and ground current detection enables simultaneous monitoring of all phases and the grounding path, delivering rapid fault identification and accurate fault localization. This reduces miscoordination and timing delays, ensuring protective relays trip promptly under arc-flash scenarios. The result is tighter protective coordination, reduced arc energy exposure, and improved MTTR for restoration after faults.
Yes. The BU-EAFR-110P is designed for panelboards, MCCs, and other centralized electrical distributions typical in manufacturing. Its 12-point sensor capacity supports large or complex feeder networks, while 4 trip relays and 2 high-speed outputs enable flexible protection schemes. This makes it well-suited for environments where reliability, uptime, and worker safety are critical.
Compliances for this specific unit are labeled as 'Contact Manufacturer' in the data. For regulatory alignment, verify with Eaton directly to obtain current certifications, including any SIL, CE, IP, or region-specific approvals applicable to your installation. Documented confirmation from Eaton ensures your site meets local safety and performance requirements.
Routine maintenance involves periodic wiring integrity checks, sensor health verification, and firmware or configuration reviews per Eaton guidance. ROI arises from faster fault clearance, reduced downtime, lower arc-flash risk exposure, and scalable protection that avoids retrofits as the plant expands. Over time, this leads to lower maintenance costs and improved system reliability.